[src/trunk]: src/sys/rump/librump/rumpkern Force references to the component ...

[pooka <pooka%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/4a52f23bb317
branches:  trunk
changeset: 785295:4a52f23bb317
user:      pooka <pooka%NetBSD.org@localhost>
date:      Thu Mar 07 18:33:27 2013 +0000

description:
Force references to the component setlist __start/__stop symbols so
that they get generated for rump kernels constructed from static libs.

diffstat:

 sys/rump/librump/rumpkern/rump.c |  12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diffs (36 lines):

diff -r 69c15797dede -r 4a52f23bb317 sys/rump/librump/rumpkern/rump.c
--- a/sys/rump/librump/rumpkern/rump.c  Thu Mar 07 18:02:54 2013 +0000
+++ b/sys/rump/librump/rumpkern/rump.c  Thu Mar 07 18:33:27 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: rump.c,v 1.252 2013/03/03 13:11:33 pooka Exp $ */
+/*     $NetBSD: rump.c,v 1.253 2013/03/07 18:33:27 pooka Exp $ */
 
 /*
  * Copyright (c) 2007-2011 Antti Kantee.  All Rights Reserved.
@@ -26,7 +26,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: rump.c,v 1.252 2013/03/03 13:11:33 pooka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: rump.c,v 1.253 2013/03/07 18:33:27 pooka Exp $");
 
 #include <sys/systm.h>
 #define ELFSIZE ARCH_ELFSIZE
@@ -210,11 +210,15 @@
 
 RUMP_COMPONENT(RUMP_COMPONENT_POSTINIT)
 {
+       extern void *__start_link_set_rump_components;
+       extern void *__stop_link_set_rump_components;
 
        /*
-        * dummy component to make sure at least one component is
-        * present in every possible rump kernel configuration
+        * Trick compiler into generating references so that statically
+        * linked rump kernels are generated with the link set symbols.
         */
+       asm("" :: "r"(__start_link_set_rump_components));
+       asm("" :: "r"(__stop_link_set_rump_components));
 }
 
 int